buncha shit

- overhaul gradient normals to take a (dFy/dx, dFy/dz) input, and
  optionally two more: (dFx/dx, dFx/dz) and (dFz/dx, dFz/z)
  - this is what fft water needs
- put YumPbr into data.cginc
- fix tessellation compiler errors
- remove tessellation frustum culling, seems to have been buggy
- remove not impactful brdf code

1 files changed, 16 insertions, 0 deletions

diff --git a/data.cginc b/data.cginc
new file mode 100644
index 0000000..9b6ea10
--- /dev/null
+++ b/data.cginc
@@ -0,0 +1,16 @@
+#ifndef __DATA_INC
+#define __DATA_INC
+
+struct YumPbr {
+  float4 albedo;
+  float3 normal;
+  float3 emission;
+  float smoothness;
+  float roughness;
+  float roughness_perceptual;
+  float metallic;
+  float ao;
+};
+
+#endif  // __DATA_INC
+